04 CADILLAC DTS

[ATHANASSIOS]

Well guys i need some help now, am reading every day in this forum to get to know how to do things correctly, so here is my first mile correction job. And guess what, no info no where regarding this car. I try every possible software in my hands to do this but i cannot. It is 2004 Cadillac devile DTS. Digital dash with 93c66. Dash at the time that i read it had 99085 miles or 159465 km showing at the dash. I want to adjust it to 73500 , but i cannot find where the miles are located . I try tachosoft 21.5 with no luck, Tacho uviversal also with no luck.Well the only thing i can say now is Thanks in advance to every one of you guys.

[andydz106]

Did you read eeprom 16bit or 8 looks like 8 try to read it as 16 bit

[ATHANASSIOS]

I do not really remember,but i will have the car back here tomorrow. I will remove the dash & read it again. Thanks a lot for the reply any how.

[knok]

I do not really remember,but i will have the car back here tomorrow. I will remove the dash & read it again. Thanks a lot for the reply any how.


your dump looks very strange ... what tool you use to read it ??

[tranzavanza]

On Most GM vehicles the miles are stored in 00000000 and 00000010 -the first 2 lines- However your dump does not look right. Try to read 8 and 16 bit.

I do gm on a daily basis so if you have any questions just pm me.

GM uses the same codes for most of their vehicles, so if you don't find the exact vehicle try using another one that has a similar chip or type of vehicle. they are not always the same but try getting a code for the miles that you get in the dash and then compare it with what you have in dump. Tachosoft is good at this vehicles.

On GM vehicles most of the times you get the code in KM with tachosoft. so make sure you get codes for km and miles and see what works

good luck

[ATHANASSIOS]

i use a cheap universal programer that i bought from mcumall. i am waiting for the car to come back again to use my carprogr, & see the out come.Thanks any how & i will guys let u know.

[ATHANASSIOS]

Here it goes guys, the car come back & i read the eeprom again, now the dash showed 10He1386 mi or 163169km before reading. i attach both readings with a 16 & 8 bits. So i hope some body have a solution to this.I use i programer name CARPROG that i am very happy with to read the eeprom.

[tranzavanza]

Try this out 16bit
and report back

[ATHANASSIOS]

Thanks , i will try it monday & i will let u know.

[ATHANASSIOS]

Well, thanks alot, it works good, the miles show here is 60576, can we doit 7500. i Check tachosoft & i can not come up with any way to doit with tacho soft. It is posible to explain how u did this?

[ATHANASSIOS]

I am sorry. I meant 75000.

[ATHANASSIOS]

Well here is the one that shows me 60328m or 97090 km. i need one with 75000.please help.......

[tranzavanza]

you did it wrong,
Check original dump and start to work from there

[markony79]

Hi Athanassios
you need 75000 ????what
KM or MILES?????

I can fix this, No problem

[markony79]

I wait for you

[markony79]

I sent 2 files, one is in KM
another is in MIL

Write what hapends

[PremierD]

Here it goes guys, the car come back & i read the eeprom again, now the dash showed 10He1386 mi or 163169km before reading. i attach both readings with a 16 & 8 bits. So i hope some body have a solution to this.I use i programer name CARPROG that i am very happy with to read the eeprom.

Edit this in mate ....

[ATHANASSIOS]

I sent 2 files, one is in KM
another is in MIL

Write what hapends

Thanks for ur time but ur 75000, miles one shows 327968 miles on the dash, i cannot believe the strees that this car gave me

[markony79]

Try to swap bytes ,and try again,
I have options for this car on OBD

[ATHANASSIOS]

Edit this in mate ....

Thanks mate, u r the best, thanks again. Well the experience shows always..
the miles shows in case u want to know 74992.

[ATHANASSIOS]

Try to swap bytes ,and try again,
I have options for this car on OBD

well thanks again for ur valuable time. I used the PremierD reply & fix my problem. Now i want to go back & analyze all the dumps to find out what happen with the previous dumps , so i have knowledge as how the system works.Any help it will be appreciated. I spend a lot of time in this car , my & my friend also, checking everything on tachosoft, but to no available.I try not to bother members to answer questions till i give up. That is what i did with this car.If i do not try my self i will never learn. Now i have the solution from a member but still i have to figure how is done......
Thanks everybody for the help

[JandJSpeedShop]

I am wondering how this was figured out. I am working on a 2001 Cadillac STS right now with a 93c46 EEPROM and I can't seem to figure out the HEX value. Nothing matches up with any of the calculators I have on file

[paul_mike]

On a 2001 normally the odo value are from or around x10 to x30, post your dump will help you

Paul